• Designed new UI features by closely colaborating with PM and developed middle tier support – Features were released across all customers (500+ universities in US)• Pitched React Native support to management and created PoC• Learned and built an automatic testing pipeline using Terraform and AWS to get isolated environments. Increased speed of resolving customer issues by 50%

1. Microsoft Teams• Developed the core of Microsoft Teams Toolkit VSCode extension and successfully released it in production. Currently it has over 30k installations from VSC marketplace.• Designed and implemented Validation Tool that validates all packages created in AppStudio and Microsoft Teams Toolkit extensions for Teams Platform. It decreased failures for customers on pre-publishing package step in 3-5 times, saved dev time significantly and improved developers experience.o Implemented server side core logic with support of validation rules and UI client code based on React+TS. Set of validation rules can be easily extended for support of specific manifest version as well.o Integrated Validation tool into VSC Teams Toolkit extension and into AppStudio UI.• Designed and developed Publishing Tool for publishing packages for Teams into company app catalogs.o Integrated Publishing Tool into VS/VSC Teams Toolkit extensions and into AppStudio UI.• Released manifest schemas for manifest versions 1.5/1.6/1.7 and described the whole release process so other developers can follow it.• Build pipelines improvements (switched from Classic to YAML based, decreased build time some of the pipelines on 30%).• Advertising banner for VS/VSC Teams Toolkit extensions (daily installations increased on 50%).• Designed a lot of UI improvements and features and bug fixes for AppStudio

1. Personal startup projects in the IT educational area based on ReactJS (React Hooks) with grommet UI components, React Native, NodeJS, AWS (DynamoDB/S3), 2. Github pet projects which gain some popularity:• Automated curated list of awesome films about IT people (integrated with IMDb service to get ratings) - https://github.com/greybax/awesome-IT-films• Cordova Plugin for ProGuard. Enables integration with Proguard for optimization, minification, obfuscation in build time for Java bytecode - https://github.com/greybax/cordova-plugin-proguard• Cordova plugin for showing a native mobile spinner. Featured in Ionic Framework for hybrid mobile development - https://github.com/greybax/cordova-plugin-native-spinner• Ultra-lightweight javascript function for converting Cyrillic symbols to Translit. Supports Russian, Ukrainian and Belarusian languages. - https://github.com/greybax/cyrillic-to-translit-js

1. Microsoft IcMResponsibilities:• WebApp– I've reduced angular $digest cycles on one of the heavy app pages which decrease load page time from 10s to 4s – Implemented and designed Infinite Scroll component. It decreased render page from 4s to 1s– Implemented cache improvements for decreasing page loading time– Developed Support Page with responsive design• MobileApp– Designed architecture and implemented build pipeline.– Implemented UI and business logic for application core.Technologies: TypeScript, Angular, ES6, Cordova, SASS, Jasmine2. Microsoft CRMResponsibilities:• Unified Customer Intelligence Service– Designed application core– Wrapped highcharts widgets (Bar, Bubble, Spider, etc.) as angular2 components– Implemented custom Timeline widget using D3– Implemented custom bindings for specific widget structure– Added tests based on Jasmine and Karma– Implemented unit tests and angular2 component testsTechnologies: TypeScript, Angular2, ES6, Redux, SASS, Jasmine

1. Microsoft Dynamics AX RetailResponsibilities:• Non-windows POS project– Developed cross-platform (iOS, Android) UI using DevExtreme framework– Developed login page UI– Implemented UI for customer search and products search– Implemented cart page UI with CRUD operations– Developed new module ‘Daily operations’• Cloud POS project– Ported UI from non-windows POS to browsers support (IE, Chrome) based on WinJS• Designed new feature ‘Task recorder’ for Modern and Cloud POS:– Developed format of configuration file for events capturing– Added new functionality of manage recording events to JSON object– Added support of saving record to Azure Web Service and receive link to generated file– Implemented possibility of downloading and reproducing generated file in UI.• Implemented screenshot capturing for ‘Task recorder’ feature in Modern POS based on C#Technologies: TypeScript, KnockoutJS, WinJS, JQuery, JavaScript, LESS/SASS, CSS2. AuthorIt plugin Responsibilities: • Developed main program module• Implemented most of XSLT rules for Import module• Added NUnit testing framework to the project.Technologies used: C#, XSLT, NUnit, TDD

1. Electronic trade platform 1.0• Implemented new trade types:– Closed auction– Closed contest– Opened contest• Developed automatic user logout feature• Implemented specific UI for several customer• Developed customizable CAPTCHA feature with next settings:– Life time– Picture weight– Customizable dictionary• Customer support: log analysis and support client’s databases.• Developed new feature– New role ‘Supplier’– Customer can has several suppliers– Customer can organize tenders for different suppliers• Added unit tests based on NUnit• Work on automatization of some routines (creation of platforms’ backups, log analysis, scripts for CI-system CCNET, platform updates)2. Electronic trade platform 2.0• Developed new UI based on Bootstrap 2.03. Microcredit• Developed UI notifications for user using toastr library• Implemented ‘Authorization” module• Implemented ‘Registration” moduleTechnologies used: C#, ASP.NET MVC 3, EntityFramework 4, MS SQL, Ajax, JavaScript, NUnit, Bootstrap 2.0.

Responsibilities: • Developed UI dashboard for management of heat networks based on HTML/JS/CSS.• Developed server side module ‘Heat loss calculation’ for heat networks project: Depends on materials– Depends on environment properties (temperature and etc)– Depends on network type (underground, aerial)• Added unit tests for covering most functionality of Heat networks systemTechnologies used: ASP.NET, HTML, C#, Ajax, JavaScript, CSS.